Frictional grip-clutch



(N0 Model.)

H. H. KENDRICK. FRIOTIONAL GRII GLUTGH. N0. 434,934. Pat'ented Aug. 26, 1890.

TED STATES PATENT OFFICE.

HILAND I-I. KENDRICK, OF FULTON, NEW YORK.

FRICTIONAL GRlP-CLUTCH.

SPEGIFICA'I'ION forming pa.rt of Letters Patent N0. 434,934, dated August 26, 1890.

Application fi1ed November 26, 1889. Seria1No. 331,671. (N0 model.)

T0 aZZ wh0m zt may c0ncern:

Be it known that I, HILAND II KENDRICK, 0f Falten, in the county 01:Oswego, in ehe Stae 0f New York, have invented new and useful Improvements in Frictional Grip- Clutches, 0f which the following, taken in connection With the accompanying drawings, is a ful1, c1ear, and exact deseription.

My inventionrelaues t0 bearings f01' flywheels, pnlleys, &c., and espeoially 150 that dass where it is desirable t0 relieve working parts of a maehine fron1 excess 0f strain and breakage whenever a working part encounters an object causing a sud(len stoppage 0f that particular pmt, so as so ease downehe momentum of eaeh fiy-wheel or drive-pulley.

My o bject is to produce a friction gripc1utch which Will constifiute a slip-connection between a shaft and a drive-pulley 01' fly 01 balanee whee1 thereon, which in ordinary use Will 11011 slip, but which will permit the slipping 0f such whee1 upon the shaft whenever any obstacle oreates a sndden stoppago 0f any working parts 0f a 1.xachine, m1d by such slip'ping 01 rotation 0f such wheel upon its shaft Will ease off the sudden excess of stmin down t0 a Safe point withou1; brmkag M.y invention consiss in Ehe seveml nove1 fea'ures 0f construction and operation which 2L16 hereinafter described, and specificzflly set fo1th in Ehe elain1 hereto annexed.

It is constructed as follows, reference being had t0 the accompanying dmwings, in which Figme 1 is a top plan showing a shaft, a fiy-wheel, my s1ipluth, and a sprooket 01 other pulley driven by t-he whe1. Fig. 2 is a plzm view 013 0110 Of the eoll-ar-sectionS. Fig. 3 is a plan view of the inner faee 0f the sprocket 01' pu11ey. Fig. 4 1's a vertical transverse section 011 lin e 00 x, Fig. 1.

A is the main shaft, upon which -the fly wheel 01 drive-pu1ley a is mounted loosely. The hub b 0f this flywheel is elongatecl inwardly, so that the secti0ns of the collar B will fit over iu.

Upon the outer end of the shaft 1 secure a sprocket 01 other pulley C, for transmitting power from the shaft. The inner face of this sprocket is provided with recess c in its outer face. Each of the collar-sections is provided With a flange d 0f proper form and siz6 t0 fit into one ofthe recesses c,and Ibhus create a rigid clutehconnection between 1she journal-box and the sprookeo'. I show this as one 0f the many rigid. connecuions Whi0h may be made between the 0011m and spronket 01 other pulley. The inner concaved face 0f each collar-section is recessed for substantiallyits whole length'surface, and in euch recess I plane a leather paeking e, which bears upon the periphery 0f the hu b b when the sections are in p1ace thereonembracing it and holding i by frietional contact and with suffieieht grip to transnnit power from the sprocket t0 the fiy-whee], or vice versa, when the b0x b0lts am tightened up.

I1; will be observed tha1; when any working part 0f the machine is suddenly obstructed in its operation so as t0 wholly 01' parb.ially stop the machine the momentum.of the wheel a Will temporarily break the gxip 0fthe eollar upon the hub b, an(l the hub Will slip unti1 the momentum is reduced, so tha the breaking strain upon the working pzirts is evercome, and, in fact, the whole machine s:rops. Then when the machine is again started the friotional gripof the box np0n the hub hasreasserted ibself, {und the fly-wheel, sprocket, and shaft again revolve together as though all one piece.

It Will be observed t1mt instezud of the sprocket Ican use a recessed 0011m with the same effect.

What I elaim, and desire to secure by Letters Patent, is-

A friction grip-clutch conqnising a n1ain shafta, a pu1ley seeured thereon and provided with recesses in its inner face, a fly 01' 0the1 wheel 100se npon said shaft, and a collmrprovided With friction-packing and embmcing the hub of the Wheel and with projections fitting into ehe recess in the pulley, in eombination as set forth.

In witness whereof I have hereunto setmy band this 29th day of October 1889.

HILAND H. KENDRICK.

In presence of H. P. DENISON, ARVIN RIOE, EMMA COATES. 

